Telephone attachment



P. I. WERBER. TELEPHONE ATTACHMENL APPLICATION FILED FEB. 28'. I92I.

1,404,817, Patented Jan. 31, 1922.

y @WWW PHILIP J. WERBER, OF ST. LOUIS, MISSOURI.

TELEPHONE ATTACHMENT.

Application filed February 28, 1921.

To @ZZ u-aom t may concern Be it lrncivn that Prrimr J. lVnRBnR, acitizen of the United States ci America, residing at St. Louis and Stateof Missouri, has invented certain new and useful Improvements inrI."elephone Attachments, of

'which the following is a specilication.

almost impossible to effectively use a tele-V phone Without placing thehandover the transmitter mouthpiece in order to pievent the noise fromWithout entering the mouthpiece, Customarily the hand is placed over themouthpiece.

My purpose isv to effectively and positively bring about this resultmechanically, i. e., by damping the vibration ot the transmitter. Withthis and other objects in vieiv my invention has relation to certainnovel features 'of construction and arrangements of parts as Will behereinafter vmore tally described and pointed out in the drawings inWhich Fig. l. is a 'ragmental sectional elevation of a conventionaltelephone transmitter and mouthpiece VWith my device attached.

Fig. is anL enlarged sectional elevation ot my device removed from atransmitter.

Numeral 3 indicates a conventional transmitter casing to which isattached the con- Specification of Letters Patent.

Patented J an. 31, 1922.

Serial No. 448,706.

ventional mouthpiece at and in which is located the vibratingtransmitter diaphragm 5. n the casing 3 at G my device is placed. Itconsists of a rod 7 passing through a hole in the casing 3 and on theinner end of which is positioned the button 8. The Washer 9 is thenplaced over the rod 7 eX- ternally to the casing 3; the coil spring 10is then placed over the rod 7 external to the Washer 9. Numeral Ilindicates a cup With a. hole in its closed end. Rod 7 passes throughthis hole and the cup 11 is secured to the rod 7 by any conventionalmeans. It `Will he seen that when the cup 11 is moved toward the casing3, the spring is compressed and the button 8 is made to impinge onthetransmitter diaphragm 5,

vthereby preventing its vibration and hence preventingany sound frombeing transmitted through it. The spring l0 normally holds the button 8in a disengaged position. It Will also be evident that thus damping thetransmitter diaphragm Will not interfiere `with the operativeness of thereceiver.

ll'lhat I claim and mean tosecui'e by Letters Patent. is:

In combination with a transmitter diaphragm. a casing. a rod piercingthe'casing, said rod having a button on its inner end7 a washerpositioned on said rod externally to said casing, a spring positioned onsaid rod externally to said Wash-er` a cup secured at the end of saidrod and partially enveloping said spring, the button on said rod beingpositioned adjacent said transmitter diaphragm.

In testimony whereof I affix my signature.

PHILIP J. WERBER.

